Do the bags have to be refrigerated until used?
I say that because if that's not required I'm really shocked it doesn't have a clock/timer so you can load a bag, place an empty glass under it, and have it automatically squeeze it at a preset time. For all the engineering in there why not have that feature?
Because "common sense" features tend to not be really considered at all by SV startups... they're more in it for the bling, the wank, and the $$$.
I remember once using (or being forced to use) a web app made by a company like this --- and it would've been trivial to change the page CSS style to have it actually show useful information and be easier to use instead of hiding it behind lots of click-overs, so I gave feedback and their response was basically "we think it looks better even though you need to click a few more times, so we're not changing it"
I ended up just doing it locally with a userstyle.